In order to promote the recycling of scrapped cars and build a green industrial system,this paper summarized the recycling cases and technological evolution of discarded plastics used in automobiles in recent years.From the aspects of recycling and sorting system,the improved proportion of recycled automobile plastic components,and recycled plastic technology research and development,this paper puts forward optimization countermeasures to actively promote the reduction of automotive plastic production and use at the source,accelerate the standard recycling,cleaning,utilization and disposal of plastic wastes,and stimulate their recycling and utilization.Under the dual-carbon target decision deployment,renewable resources have significant carbon reduction value,and become a blue ocean track with a broad market space and not yet fully excavated.Grasping the economic opportunity of recycling waste plastics is also of great importance to help China's automobile industry break through the development bottleneck.